Final rule · 2025-03865

Certain Existing Chemicals; Request To Submit Unpublished Health and Safety Data Under the Toxic Substances Control Act (TSCA); Extension of Submission Deadline

In response to requests from stakeholders, the Environmental Protection Agency (EPA or Agency) is amending the deadline for reporting pursuant to the Toxic Substances Control Act (TSCA) Health and Safety Data Reporting rule, which requires manufacturers (including importers) of 16 specified chemical substances to report certain lists and copies of unpublished health and safety studies to EPA. Specifically, EPA is amending the deadline from March 13, 2025, to June 11, 2025, for one of the 16 chemical substances (vinyl chloride) and to September 9, 2025, for the remaining 15 chemical substances. The Health and Safety Data Reporting Rule requires manufacturers (including importers) of certain chemical substances to submit lists and copies of certain unpublished health and safety studies to EPA.